When you need all of todays tech blended with a durable component spec and an agile wheel size its tough to beat the stumpjumper fsr comp carbon 650b it features components from sram hand selected to ensure that you get the most performance over rugged terrain possible the fact 9m carbon fibre trail chassis with m5 alloy rear end creates a lightweight strong and stiff construction the carbon molding process also allowed specialized to revolutionize how you carry your trail essentials